02-27-2012 06:35 AM - edited 03-04-2019 03:26 PM
Simple question here folks,
I have a SR520 router with the ADSL WAN built in.
I am looking to ignore the ADSL port and utilise the 4 FA ports to route between two networks.
Can I configure the ports on the switch part of the router to become Layer 3 and take there own Ip addresses?
If so I can save myself the purchase of a new router.
I have used loopbacks before but not sure that will work.
Regards,
Chris Snape
02-27-2012 06:48 AM
Youll need to great vlans which are layer 3 and then put the appropriate layer 2 port into that vlan
02-27-2012 07:31 AM
Hi,
Your ADSL port is an WAN port right ? If you are able to issue "no switchport" on the fastethernet port you can your Fa Port as layer 3 port but i think your SR520 router would not be having L3 Fa port's.
Please refer the below link:
http://www.cisco.com/en/US/prod/collateral/routers/ps9305/data_sheet_c78-484356.html
You have to use your ASDL Wan port for routing and Fa port's for LAN.
Regds
Nitin
02-27-2012 07:35 AM
Yes, you can, as long as it is routable port on the router and if your router does have a switch module, then only SVI port will be routable as L3.
Hope that answers your question.
thanks
Rizwan Rafeek
02-27-2012 08:27 AM
Thanks for the responses chaps,
I need to put the IP address actually on the interface so Layer 2 Vlans won't be enough.
Having looked at the "no switchport" command within one of my fa interfaces I do get a submenu, but still note sure I can get a L3 address onto one of them. I have attached a screen grab.
someone else mentioned removing the fa port from the bridge to make it a L3 WAN port?
Basically the reason for this is my office is upgrading from Broadband to Fibre with a Ethernet NTU.
Regards,
Chris Snape
02-27-2012 08:45 AM
Hi,
By this output it means you cannot create a L3 port on Fastethernet with "no switchport". Here i think you only have the option to create an SVI but since you also need to connect it to a new link, and need to put an IP address under that interface this could only be done by getting an addtional hardware which have L2/L3 capability
Regards
Nitin
02-27-2012 09:05 AM
Damn! But thanks for the help.
What would you suggest for a basic L3 router? Don't need anything other than 2 Fa ports really.
1841?
Regards,
Chris Snape
02-27-2012 09:13 AM
Hi,
This is up to you really what you want to buy keeping in mind the price, support and scalability issues associated with the product you buy.
http://www.cisco.com/en/US/prod/collateral/routers/ps5853/eol_c51-625662.html
Regards
Nitin
02-28-2012 09:14 AM
Thanks for the info,
As budget is tight I have gone for a reconditioned 1841 at a very cheap price with a small warranty.
Regards,
Chris Snape
02-27-2012 09:35 AM
891,1801,1811
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